<!DOCTYPE html>
<html>
  <head>
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width,initial-scale=1.0" user-scalable=no>
    <title>smile-vue</title>
  </head>
  <body>
    <div id="app"></div>
    <!-- built files will be auto injected -->

    <script>
      //得到手机屏幕的宽度
      let htmlWidth = document.documentElement.clientWidth || document.body.clientWidth;
      if(htmlWidth > 750){htmlWidth=750}
      //得到html的Dom元素
      let htmlDom = document.getElementsByTagName('html')[0];
      //设置根元素字体大小
      htmlDom.style.fontSize= htmlWidth/20 + 'px';
    </script>
  </body>
</html>
